City Guilds Model Questions Vol1 2019 Engineering Question 39
Practice objective / multiple choice question 39 from the 2019 City Guilds Model Questions Vol1 Engineering examination.
A step‑down transformer supplies a load that requires \(12\ \text{V}\) at \(5\ \text{A}\). The primary is connected to a \(240\ \text{V}\) mains supply. The transformer incurs copper losses of \(2\ \text{W}\) in the primary winding and \(1\ \text{W}\) in the secondary winding. Calculate the efficiency of the transformer, expressing your answer as a percentage to one decimal place.
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About This Question
This is City Guilds Model Questions Vol1 2019 Engineering Question 39. It is one of the objective questions from the 2019 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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